Yardage stop motion for warpers



. Oct. 27, 1925. 1,558,969

I E. J. ENTWISTLE ET AL I YARDAGE STOP MOTION FOR WARPERS Filed June 11.1924 2 Sheets-Sheet 1 I i g INVENTORS 7 4 WM WEY Patented Oct. 27, 1925.I

UNITED STA EDWARD J. ENTWISTLE, or LOWELL, MAsSAcHUsE'rrs, AND'RALPH.W.none, or

' EXETER, NEW HAMPSHIRE.

YARDAGE STOP-MOTION FOR WARPERS.

Application filed .Tune 11, 1924. Serial No. 719,336.

To all whom it may concern:

Be it known that we, EDWARD J. ENT- wrs'rLn and RALPH W. Dons, citizensof the United States, residing at Lowell and Exeter, respectively,dlesex and Rockingham and States of Massachusetts and New Hampshire,have invented certain new and useful Improvements in Yardage StopMotions for Warpers, of which the following is a specification.

' It has special reference to silk warpers wherein the silk threads arewound upon a reel, perhaps six feet in diameter, in 'successive strips,circumferenti-ally.

It is the custom in preparing such silk warps, at predetermineddistances tov stop the machine and to pass between the shed or lease ofthewarp, what are known as leasecords. I

In the common'formof warper to which this invention is applicable, thelarge reel is at the backwhile the operator is between this and thespools, her attention being taken up in watching and piecing threadsas'they pass'from the spools to the reel.

The reel is driven by a friction pulley which is held in'position by afoot lever on which the operator places one foot when it is desired tohave the machine operate, and from which she takes her foot when it isdesired to stop.

The purpose of our device is to provide adjustable means by which, whena pre-de termined length of the warp known as a out has been wound thereel will be automatically stopped by a trigger action, but will bealmost instantly set for starting the next cut and before the operatoragain steps on the foot lever. a

An additional purpose of our dev ce is to connect with this mechanism atype of 2 recording mechanism which will count the number of cuts whichcan be set for any pie-determined number, as 7, 8 or 9, in such mannerthat the indicator will make a complete circle for such numberof cuts.

In the drawings, Fig. 1 is a detail in elevation of the recordingdevice. Fig. 2 is a view from the rightof Fig.

in the counties of.Mid-- by suitable supports Fig. 3 is a view of thedial from the back of Fig. 1.

Fig. 4: is an elevation from the side of a silk warping machine of thetype to which our device is especially applicable. 7

Fig. 5 is a detailed elevation from the side of a modified form of latchlever.

Fig. 6 is a detail showing the latch or detent in another position. N

Fig. 7 .is aview from the left of Fig, .5.

Fig. 8 is a detailed elevation of the measuring chain and latch lever.

Fig. 9. is an elevation from the right of Fig. 8 with the chain removed.p

In the drawings, A represents the frame of a silk warper in which thereis a large reel or mill B which is freely revoluble on or with shaft 60carried in suitable bearings by the frame.

G represents a control lever pivoted on the'frame at.53. It has on itslong arm 54: a square stud which projects sidewise therefrom, and at itsshort end 56 carries a friction drive roll 16. 5 I

This drive roll 16 is fixed to a shaft 52 on which is alsofixed a drivepulley 17 driven by a suitable belt P, or in any other way whereby poweris transmitted to friction drive roll 16..- v

Shaft 52 is revoluble in bearings carried 18 pivoted at 51 on a bracket50 whereby, when the end 54: of lever C is depressed end 56 carryingshaft 52 and roll 16 are raised, roll, 16 drives reel B through contactwith a ring 80 fixed thereto.

7 is across shaft which insuch machines is usually a worm and carries apulley or sprocket 63 which is driven from the reel B through a pulleyor sprocket 61 revoluble therewith, by means of a belt of chain 62.

F is a foot lever pivoted at 70 to the frame and having a foot rest 71for the operators .foot. It is normally pulled upward by 'a spring 72and its upward movement is limitedby a stop 14.

The above parts are all old. Ordinarily there is a rod extending fromfoot' lever F to the end of C by which control lever C is operated.

In our device, -we provide a latch G pivoted at one end 82 to lever F,and "preferably having a turn-buckle 83 by which its length can beregulated.

itsbaok face 12 is a square notch 10 in position to engage stud 55 whenfoot lever F is raised, as it normally is by spring 72.

An engaging spring 13 normally presses the face 12 against stud 55.

D is a sprocket carried by? the end of cross-shaft 7, and around thissprocket passes an endless chain H, the links of which can be removedand replaced, whereby the chain can be lengthened or shortened.

In Figs. 8 and 9 is shown a simple form of knock-off lever inco-operation with a chain such as H in which is a link having a diamondshaped projecting tooth 2.

K is a knock-01f lever medially pivoted at 5, having an arm 3, at theend of which is a pointed nose 1 which normally is in engagement withchain H, and at the end of its other arm 4 a knock-off pin 8 normally inengagement with the back face 12 of latch G.

The length of chain H is adjusted for the length of cut desired, andtooth 2 is started just beyond nose 1. The chain moves around with thereel 13 until the tooth 2 engages the nose 1, which forces it back andthus pushes knock-off pin 8 forward where by stud 55 is released fromnotch 10, and the weight of reel 16, pulley 17, etc. causes roll 16 todrop. away from rim 80. Reel B quickly stops from friction, but usuallynot before tooth 2 passes beyond nose 1 a short distance.

If this occurs when the operators foot is on rest 71 the weight causesrest 71 to drop, and she is instantly aware that the ma.- chine hasstopped. As soon as she removes her foot, spring 72 lifts lever F whilespring 18 causes the re-engagement of notch 10 with stud 55, and themachine is all set ready for action. She then again places her foot onrest 71.

To operate recording mechanism L, we can use a pin 28 fixed on chain Hin a suitable position ahead of tooth 2 so that when nose 3 isdisengaged, pin 23 will strike one of the fins 2 4 of a small gear 21and make it turn one-fourth. The spring 22 will be pushed out and willsnap in, in a well known manner.

Gear 21 revolves another indicating gear 20, the face 27 of whichcorresponding with the gear teeth is divided into numbers such as 1 to 9the purpose being to indicate the number Jof cuts desired.

By using a larger or smaller gear 27, with correspondingly greater orfewer teeth the number can be changed to 9 or 8 or 7, or to 11 or 12,etc.

By attaching this to a bracket 90 in which is a slot 91, through whichthe pivot 26 for ge rs pa s and by means f nu 2 difierent diameters ofgears can be used.

As h opera or s ar he maeh ne fr time to time to" piece ends, it ispossible she might be releasing the foot lever just before the nosereached the tooth and it might then coast past, and therefore not stopthe machine at the decided yardage.

To avoid the possibility of this, we may use the device shown in Figs.4, 5, 6 and 7.

Instead of a diamond shaped tooth, we, may use on a link 40 a face 41which is fiat and elongated to correspond with the normal coastingdistance which the reel runs after pulley 16 is disengaged from its rim80.

On knock-off lever Z is an arm 42 to which at 44 so as to swinglaterally is pivoted a detent 43 having a nose 46 and returning spring45.

There is also on an arm 47 fixed to the frame, a stop screw 48 to limitthe movement of Z, nose 46, and arm 400 which is the same as arm 4, andcarries a knock-off pin 8 as in the other construction.

As shown in Fig. 6 by the full lines, nose 46 when pushed aside by hand,on account of spring-'13 acting on aim 400, will slip in beside face 41of link 40'but when this link passes to the position of the dotted linesin Fig. 5, nose 46 will spring back to its normal position shown by thedotted lines in Fisl/Ve claim:

1. The combination in a warping machine having a frame, a reel revolubletherein, a control lever pivoted in the frame, a stud carried by one endthereof, a friction drive roll carried by the other end proximate andadapted to drive the reel, a cross worm shaft, means to drive said shaftfrom the reel, a foot lever, and means to keep said foot lever normallyraised; of a latch pivoted to said foot lever and having a notch inengagement with the stud; a spring adapted to keep the notch and stud inen gagement; a sprocket carried by the cross shaft; an endless chaincarried by the sprocket having a projecting tooth; a medially pivotedknock-off lever having at one end a nose in engagement with said chainand at the other end a knock-off pin in engagement with said latch;recording mechanism; and a pin carried by the chain so positioned as tooperate said recording mecha nism.

2. The combination in a. warping machine having'a frame, a reelrevoluble therein, a control lever pivoted in the frame, a stud carriedby one end thereof, a friction drive roll carried by the other endproximate and adapted to drive the reel,a cross worm shaft, means todrive said shaft from the reel, a foot lever, and means to keep saidfoot lever normally raised; of a latch pivoted to said foot lever andhaving a notch in engagement with the stud; a, spring adapted'to keepthe notch and stud in enement; a Sproc e c r y h Cross shaft; an endlesschain carried by the sprocket having a projecting tooth with a flattenedface; a medially pivoted knockoff lever having at one end a knock-offpin in engagement with said latch, and at the other end an arm; a detentwith a nose in engagement with the chain pivoted to said arm and havinga returning spring; recording mechanism; and a pin carried by the chainso positioned as to operate said recording mechanism.

3. The combination in a warping machine having a frame, a reel revolubletherein, a control lever pivoted in the frame, a stud carried by one endthereof, a friction drive roll carried by the other end proximate andadapted to drive the reel, a cross worm shaft, means to drive said shaftfrom the reel, a foot lever, and means. to keep said foot lever normallyraised; of a latch pivoted to said foot lever and having a notch inengagement with the stud; a spring adapted to keep the notch and stud inengagement; a sprocket carried by the cross shaft; an endless chaincarried by the sprocket having a projecting tooth; a medially pivotedknock-0E lever having at one end a nose in engagement with said chainand at'the other end a knock-off pin in engagement with said latch.

4. The combination with a warping machine in which is a revoluble,endless measuring chain having a projecting tooth with a flattened face;of a medially pivoted knock-off lever having at one end means to stopthe warping machine, and at the other end an arm; and a detent pivotedlaterally to said arm, said detent having a nose in engagement with thechain, and a returning spring.

EDWARD J. ENTWISTLE. RALPH W, DOEG.

